package ArraySecond.DoublePoint;

/**
 * 反转字符串
 * 编写一个函数，其作用是将输入的字符串反转过来。输入字符串以字符数组 s 的形式给出。
 *
 * 不要给另外的数组分配额外的空间，你必须原地修改输入数组、使用 O(1) 的额外空间解决这一问题。
 *
 * 示例 1：
 *
 * 输入：s = ["h","e","l","l","o"]
 * 输出：["o","l","l","e","h"]
 * 示例 2：
 *
 * 输入：s = ["H","a","n","n","a","h"]
 * 输出：["h","a","n","n","a","H"]
 *
 */
public class ConverseString {
    public static void reverseString(char[] s) {
        int i = 0;
        int j = s.length-1;
        while(i<j){
            char temp = s[i];
            s[i] = s[j];
            s[j] = temp;
            i++;
            j--;
        }
    }
        public static void main(String[] args) {
            char[] chars = {'H', 'E', 'L', 'L', 'O'};
            reverseString(chars);
            for (int i = 0; i < chars.length; i++) {
                System.out.println(chars[i]);
            }
    }
}
